How do I remove my posted question

Make sure that there is a good connection at the cable ends to the battery. Check the main fuse at the power distribution center.

What is the car or truck. And first step is know where it is. These newer hybrid cars are something to be vary careful of. Older car I will say it's easy. Remove cover to get to battery. Remove the ground connector first and move cable away. Then remove the positive post connector. Doing that way will remove any chance of shorting the posts and damaging the battery or car. Remove the hold down bolt and some may rust so can get it off. Pry bar or cutting bolt may be needed if nothing will get the bolt loosen. Then pull out the battery. Install opposite of taking out. When installing bolts if side post battery be careful you don't over tighten bolts. But to lose is a problem also. If you can turn the cable tighten more so it tight.

Easiest would be to remove banana plugs on one end of wire and put eyelet on or wrap bare wire around the post and tighten nut and washer down onto it to secure it as in the older days of posts and wires.

You get nothing at boot? No BIOS screen? Try this, remove all media, DVD, CD, USB, etc., unplug, remove battery, plug in, reboot. OR try to boot to safe mode. Post results.

OUTDATED POST - PLEASE REMOVE

Go to this LINK.

If any more problem encounter,post or thumbs back.

a friend had same issue , i dissembled laptop and found a burnt diode chip beneath where power button sits on top cover panel there are two clips under power button , one of the clips shorted the diode , only orange power button would lit up on front edge of lower case

have you check the display on external monitor, check it by connecting to vga port of your laptop,
if there is a display then its the problem of your laptop screen

remove the rct battery and try again power on again.
Also look for and replace bad cappacitors. If nothing works, you need a new momo!.

remove the rtc battery and try again.
Also check for bad cappacitors. If you find some like the image below, you need to replace them.